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A hydraulic circuit for a mobile handling device includes a lifting cylinder suitable for handling a variable load and an accumulator for recovering or recycling lowering load energy. The hydraulic circuit also includes a variable hydraulic machine, driven by a drive unit, capable of developing full

A hydraulic circuit for a mobile handling device includes a lifting cylinder suitable for handling a variable load and an accumulator for recovering or recycling lowering load energy. The hydraulic circuit also includes a variable hydraulic machine, driven by a drive unit, capable of developing full system pressure in two flow directions, to either of two ports. One of the two ports is connected to the accumulator, by a first connecting line, and the other is connected to the lifting cylinder, by a second connecting line. A second accumulator is connected to the first and second connecting lines by a check valve.

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A hydraulic circuit for a mobile handling device includes a lifting cylinder suitable for handling a variable load and an accumulator for recovering or recycling lowering load energy. The hydraulic circuit also includes a variable hydraulic machine, driven by a drive unit, capable of developing full

A hydraulic circuit for a mobile handling device includes a lifting cylinder suitable for handling a variable load and an accumulator for recovering or recycling lowering load energy. The hydraulic circuit also includes a variable hydraulic machine, driven by a drive unit, capable of developing full system pressure in two flow directions, to either of two ports. One of the two ports is connected to the accumulator, by a first connecting line, and the other is connected to the lifting cylinder, by a second connecting line. A second accumulator is connected to the first and second connecting lines by a check valve. than an internal surface of said hollow cylindrical sleeve. 12. The process of claim 11, further comprising: embedding at least one of reinforcement threads and reinforcement fabric in said elastomeric material. 13. The process of claim 11, further comprising: setting the mold temperature between approximately 10 and 100° C. colder than a temperature of the elastomeric material being cast. 14. The process of claim 13, further comprising: setting the mold temperature between approximately 20 and 80° C. colder than a temperature of the elastomeric material being cast. 15. A process for manufacturing a press jacket in an apparatus that includes a cylindrical casting mold having at least one casting surface, said process compri